{"id":"ghsa-ghsa-pchr-8j38-3x4p","seq":2383,"kind":"advisory","title":"Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read","url":"https://github.com/advisories/GHSA-pchr-8j38-3x4p","permalink":"https://vulnpulse.app/items/ghsa-ghsa-pchr-8j38-3x4p","summary":"影響: pip:Pillow <= 12.3.0 → 13.0.0\nSummary A small attacker-supplied TIFF can be opened and loaded normally, then reach an out-of-bounds read when an application saves it back to TIFF with retained metadata. The fixed reproducer is a 1×1, 16-bit grayscale, PackBits-compressed TIFF containing tag 320 (ColorMap) with 768 SHORT values: three zero-filled planes of 256 entries each. No Python object is forged and no metadata is injected after loading. Pillow's TIFF encoder allocates 768 × 2 = 1536 bytes, then passes three plane point…","severity":"high","techs":["python"],"cves":["CVE-2026-112896"],"tags":["GHSA-pchr-8j38-3x4p","Pillow"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-20T20:51:40.000Z","fetched_at":"2026-10-21T16:17:46.637Z"}